Complementary, Supplementary, and Vertical Angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

If one angle measures 30 degrees, what is its complementary angle?

Back

60 degrees.

Front

If two angles are supplementary and one measures 110 degrees, what is the measure of the other angle?

Back

70 degrees.

Front

What is the sum of the measures of complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees.

Front

If two angles are vertical angles and one measures 45 degrees, what is the measure of the other angle?

Back

45 degrees.

Front

Give an example of a pair of complementary angles.

Back

30° and 60°.

Front

Give an example of a pair of supplementary angles.

Back

100° and 80°.